Finding the Fourth Proportional to 20,245.61, 30,377.18 and 10,874.69

Step by Step Solution

1. Step 1: Write the proportion equation
   20,245.61 : 30,377.18 = 10,874.69 : x
2. Step 2: Convert to fraction form
   20,245.61/30,377.18 = 10,874.69/x
3. Step 3: Cross multiply
   20,245.61x = 30,377.18 × 10,874.69
4. Step 4: Simplify right side
   20,245.61x = 330,342,209.31
5. Step 5: Solve for x
   x = 330,342,209.31/20,245.61
6. Step 6: Final answer
   x = 16,316.74